Finding out how many people counted vs. finding common multiples
I. A 4th grade Investigations homework assignment, assigned in early November [click to enlarge]:
II. The 9th assignment in the 4th grade Singapore Math Primary Mathematics 4A workbook [click to enlarge]:
III. Extra Credit
Why does the Investigations assignment, but not the Singapore Math assigment, have to spell out its purpose? (See NOTE in the upper right corner of the former).